GNU make：定时构建，是否可以在所有目标完成后有一个目标，其配方执行(GNU make: Timing a build, is it possible to have a target whose recipe executes after all targets complete)

 我的问题类似于这一个和这一个 。 
 
 从本质上讲，我正在寻找以下内容 - 或者是一个相当干净的黑客将它拉下来： 
 
GET_TIMESTAMP  = $(shell perl -e 'print time()')
START_TIME    := ${GET_TIMESTAMP}

all: T1 T2 ... TN

T1:
T2:
...:
TN:

#...

timer:
  @perl -e 'printf( "Loaded makefiles in %ds, build completed in %ds\n", $ARGV[1] - $ARGV[0], $ARGV[2] - $ARGV[1] );' ${START_TIME} ${LOAD_COMPLETE} ${GET_TIMESTAMP}

.ATEND: timer

LOAD_COMPLETE := ${GET_TIMESTAMP}
 
 ......可以通过多种方式启动...... 
 
~ gmake all
(...)
  Loaded makefiles in 8s, build completed in 93s
~ gmake T2 T3 T4
(...)
  Loaded makefiles in 8s, build completed in 13s
 
 其核心是.ATEND特殊目标的概念，当所有CMDGOALS或DEFAULTGOALS完成时会导致某些事情发生。 

My question is similar to this one and this one.
 
In essence, something like the following is what I'm looking for -- or a fairly clean hack for pulling it off:
 
GET_TIMESTAMP  = $(shell perl -e 'print time()')
START_TIME    := ${GET_TIMESTAMP}

all: T1 T2 ... TN

T1:
T2:
...:
TN:

#...

timer:
  @perl -e 'printf( "Loaded makefiles in %ds, build completed in %ds\n", $ARGV[1] - $ARGV[0], $ARGV[2] - $ARGV[1] );' ${START_TIME} ${LOAD_COMPLETE} ${GET_TIMESTAMP}

.ATEND: timer

LOAD_COMPLETE := ${GET_TIMESTAMP}
 
... which could be kicked off in a number of ways:
 
~ gmake all
(...)
  Loaded makefiles in 8s, build completed in 93s
~ gmake T2 T3 T4
(...)
  Loaded makefiles in 8s, build completed in 13s
 
At the heart of it is this idea of an .ATEND special target that causes something to happen when all CMDGOALS or DEFAULTGOALS are finished.

原文：https://stackoverflow.com/questions/8483149